Call protected method from a subclass of another instance of different packages

Question

I want to invoke a protected method of another instance from within a subclass of the class providing this protected method. See the following example:

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Answer 1

You could access the protected methods either by subclassing and overriding; also when they are available in the same package. I will add some details. You can read details here.

The example that you have is on lines of the protected clone() method available in the Object class in java; you cannot directly call it on any object (although all object implicitly extend from the Object class).